Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoelectron spectroscopy with variable photon energy. A study of the metal hexacarbonyls M(CO)6 where M = Cr, Mo, and WGlyn Cooper, Jennifer C. Green, Martin P. Payne, Barry R. Dobson, and Ian H. HillierCite this: J. Am. Chem. Soc. 1987, 109, 13, 3836–3843Publication Date…
The conversion of the reducible divalent cross-links in collagen to non-reducible multivalent cross-links in mature collagen has resulted in the identification of several new amino acids as the putative mature cross-link. None of these compounds has completely satisfied the necessary criteria. We have now isolated an…
The approach of free radical polymerization is adapted to develop a kinetic model for predicting the curing behavior of unsaturated polyester resins. The approach taken here is essentially similar to that advanced by Stevenson with some modifications, namely (1) the efficiency of the initiator is assumed to decrease w…
ABSTRACT Some modern laminated and calcified stromatolitic structures are partially or completely formed by eukaryotes. Diatom populations in freshwater environments with elevated ionic concentrations contribute to calcite precipitation, and the formation of distinctive mineral‐rich stromatolitic laminae. Two types of…
Abstract Dimethylselenoxide (DMSeO) forms three structurally resolvable intercalates with kaolinite (d(001) = 10.95, 11.26, and 11.38 Å). The 11.26-Å kaolinite: DMSeO intercalate is structurally analogous to the 3-D ordered kaolinite: DMSO intercalate (d(001) = 11.22 Å). Infrared and solid-state 77 Se nuclear magnetic…
Some properties of the polyesters treated with such an addition-type chain extender as 2,2′-bis(2-oxazoline) (BOZ) have been investigated. The molecular size distribution and the melting point of the resultant polyesters indicate that BOZ reacts to form linear chain-extended polymers without branching. As for their th…
A solid‐state thin film rechargeable battery has been prepared using a novel efficient technique of "surface complexation method" by which a thin layer of Prussian blue (PB) can be overlaid on a solid polymer electrolyte of Nafion (Nf) as matrix. An electrochemical cell made of the composite PB‐Nf film sandwiched with…
We studied the effect of K+ fertilizer application on the transformation of clay minerals in soils from long-term field experiments and exhaustive cropping pot experiments. Soils used were alluvium, gray-brown, and brown soils with illite as the principal clay mineral. X-ray diffraction analysis of soil samples reveal…
We present calculations of the light intensity transmitted through a uniform ferroelectric liquid crystal light valve during electrooptic switching. We discuss the calculated delay time and rise time of the optical response, and show how they depend on spontaneous polarization, dielectric anisotropy, applied electric…
Frequently, first-order phase transitions in solids are characterized by the coexistence of a disordered phase and several ordered phases. Near such a transition, the disordered phase may appear in the surface region of the crystal even though the bulk crystal remains in one of its ordered states. This leads to severa…
The static and cyclic fatigue behavior of sintered silicon nitride was investigated at room temperature. Flexure specimens, with an indentation‐induced flaw at the center, were tested under a static or cyclic load applied by four‐point bending. Sintered silicon nitride was shown to be susceptible to static and cyclic…
Two classes of DNA elements interrupt a fraction of the rRNA repeats of Bombyx mori. We have analyzed by genomic blotting and sequence analysis one class of these elements which we have named R2. These elements occupy approximately 9% of the rDNA units of B. mori and appear to be homologous to the type II rDNA inserti…
Smectic layering at the surface and smectic fluctuations in the bulk can be studied simultaneously by x-ray specular reflectivity and scattering measurements. There is a peak in the angular dependence of the specular reflectivity due to surface-induced smectic layering that penetrates into the bulk as exp(-z/${\ensure…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature-programmed desorption of carbon monoxide and carbon dioxide from platinum/ceria: an important role for lattice oxygen in carbon monoxide oxidationT. Jin, T. Okuhara, Gilbert J. Mains, and J. M. WhiteCite this: J. Phys. Chem. 1987, 91, 12, 3310–3315Publication Dat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of the charge-transfer salt of decamethylcobaltocene and tetracyanoethylene (2:1): {[Co(C5Me5)2]+}2[(NC)2CC(CN)2]2-. The electronic structures and spectra of [TCNE]n (n = 0, 1-, 2-)David A. Dixon and Joel S. MillerCite this: J. Am. Chem. Soc.…
Thermoelectric power (S) measurements are reported in some ${\mathrm{La}}_{2}$${\mathrm{CuO}}_{4\mathrm{\ensuremath{-}}\mathrm{y}}$ oxides with Ba and Sr doping. S gradually decreases with increasing dopant concentration x, and for small concentration the trend can be described by assuming strong correlations. While S…
Conducting polythiophene derivatives with substituted long alkyl chain such as poly(3-octylthiophene), poly(3-dodecyl-thiophene) and poly(3-dococylthiophene) etc. Have for the first time been found to be fusible by heating in a relatively low temperature range. The film formed by the hot press method at a temperature…
A systematic study of the magnetic properties of melt-spun amorphous ${\mathrm{Fe}}_{\mathrm{x}}$${\mathrm{Zr}}_{100\mathrm{\ensuremath{-}}\mathrm{x}}$ alloys with 88\ensuremath{\le}x\ensuremath{\le}93 using M\"ossbauer and magnetization measurements has established the magnetic phase diagram. The ordering temperature…
Microstructural characteristics of long-term-aged cast duplex stainless steel specimens from eight laboratory heats and an actual component from a commercial boiling water reactor have been investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), small angle neutron scattering (SANS)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPlasticization of poly(butyral-covinyl alcohol)Jacob Schaefer, Joel R. Garbow, E. O. Stejskal, and J. A. LefelarCite this: Macromolecules 1987, 20, 6, 1271–1278Publication Date (Print):June 1, 1987Publication History Published online1 May 2002Published inissue 1 June 1987htt…